Flour-mill.



L. F. LITTLE.

I FLOUR MI'LL. APPLICATION FILED DEC-22. 1916.

.2 SHEETS-SQLEET l.

Patented Oct. 23,1917.

L. FQLITTLE.

noun MILL. I

APPLICATION FILED 050.22. I9I6. I

Patented Oct. 23,1917.

2 SHEETS-SHEET 2.

UNITED STATES PATENT 'onnron,

LUOIUS FREEMAN LITTLE,. OF OWENSBORO, KENTUCKY,ASSIG1 \TOR r menonmnmcnn MILL 00., or ownnsnono, KENTUCKY, A conromv'rron' vor KENTUCKY.

FLOUR-MILL.

Specification of Letters Patent, Patented 0013- 23, 1917.

Application filed December 22, 1916. Serial No. 138,423.

To all whom it may concern:

Be it known that I, LUGIUS FREEMAN Lmm, a citizen of the United States, re-'.

siding at Owensboro, in the county, of Daviess and State of Kentucky, have in vented-new and useful Improvements 'in Flour-Mills, of which'the following is a specification. 4

The present invention relates to flour mills, and particularly that type known as self-contained -mills in which the roll section, containing the break and reduction rolls by which grain is reduced, and reel or bolting section, where .it is sifted out and purified, are arranged in close proximity to each other, so thatshort process mill-,

ing is eflt'ected, and the instrumentalities having to do with the reduction of gram and bolting of flour are compactly and closely arranged.

In mills of this type it iscustomary to incase the break and reductionirolls in .a substantially tight casing, and the bolting reels are inclosed in an independent caslng, the two casings being adjacent each other and connected bv conveyers, usually of the screw type, which transfer the stock as it 7 must be structure of this kind the heat generated 7 in the roll section being taken up by the stock, will'undulv' heat thereel section when the stock is transferred for bolting and purifying, and it sometimes happens that cient heat will be generated to cause condensation or sweating in the reel section,

-. whichis, of course, objectionable.

oyercoming this difliculty, such as the prov1s1on of blowers, or suction fans, to effect a draft through the difierent parts of the 1 mill, and while this, to some extent, relieves the dlfliculty, it has not proved entirely satisfactory; and, furthermore, the addition of fan blowers, or the like, ,adds materially to the cost of the mill.

It is with the object of overcoming this stated objection, and doing awaywith the Various means have been provided for,

necessity of fan blowers to cool the mill, that I have devised the present constructlon,

and I accomplish this by providing air inlets between the roll section and the reel section, which will admit cool air to thestock in transit from the roll section to the reel section, whereby that stock -'will be delivered to the reel section thoroughly cooled and aerated, and the objectionable sweating? in the reel section overcome.

In order that the invention may be understood by those .skilled: 1n the art, I have shown in the accompanying drawin 's one embodiment thereof, but it will be underv stood that this is illustrative, andthat variations from this specific embodiment may be -made within the range of mechanical skill without departing from the spirit of of the housings for the 'conveyer which. transfers the stock from the roll-section to like numbers indicating like parts in the severalriews, 10 indicates a roll-section which 15 providedwithany suitable break-. mg

the rolls .13, which are the reduction rolls,

and reducing means, such as the rolls 11 and 12,...which are the break rolls, and

i only one'set of-which is shown, it being customary to provide two sets of reduction rolls, although it will be understood that,

so far as the breaking and reducing rolls. 1 are employed,-or their particular arrangeare concerned, it is immaterial how. many ment, and these breaking and reducing 1nstrumentalities, as shown, areinclosed in a substantially tight casing. Y

-Adjacent' the. roll-section is thereelor reels which, as is customary, are made up of the. fine mesh-section 15 and the coarse mesh-section 16, but it is immaterial, for

105, I bolting-section '14, containing the bolting I the particular arrangement of screening surfaces may be, and this vbattery of reelsis, as shown, inclosed tight casing.

The two sectionsof the mill above described, are connected by conveying instrumentalities 17, which, in the form here disclosed, are screw conveyers, these screw conveyers 17 being so disposed with respect to the break and reduction rolls in the rollsection 10, as that they will receive the stock from the rolls and convey it each to within a substantially the respective bolting reel which isto handle the stock. The screw conveyers 17 as shown, preferably pass through housings 18 which open at their opposite ends into. the roll-section and the reel-section, respectively, thus forming a completely inclosed casing through which the stock is fed by the screw conveyer 17.

The action rof the screw conveyer 17 in these closed housings is a pumping action, in that they not only force the stock along, but also cup and pump air across from the roll-section to the reel-section, and this transfer of air from the roll-section is also Y induced by the action of the beaters, not

shown, within the reels in the reel-section,

temperature in the reel-section, I provide the housing 18 with an air inlet, and I preferably accomplish this by providing a supplemental housingmade up of two sections bolted together, and adapted to receive, in

properly formed seats in their ends, the housings which project from the roll-section and the reel-section, as shown in .Fig. 2. The upper section of this intermediate housing is provided with an air inlet 19 which, in the form'shown, is a rectangular opening. This inlet 19 is preferably screened by means of a screen 20 mounted upon a frame 21, which is suitably secured, "as by screws 22, in the opening, the frame '5 21 preferably being arranged as shown .in .5

Fig. ,4, namely, snugly fitted to the inclined side walls 23 which define the inlet opening, this screen preventing any foreign matter falling into the stock as it passes from the roll section to the reel section.-

With this construction it will be apparent that the action of the conveyer, and the suction of the fan in the boltingreels, will cause an intake of cool air by way of the inlet 19, so that the stock will be delivered to the bolting section at a temperature to said reel-section, and a housing Lemme which will do away with sweating, and will also do away with the necessity of blower fans for cooling the mill. It is desirable to regulate this inlet 19 so as to vary the amount of air taken in, and while this may be accomplished in a variety of ways, I preferably provide the inlet with asliding gate 24, which is mounted in slideways 25 formed on the housing, so that it may be opened more or less to give such inlet area as may be desired.

. By means of this regulated inlet the conditions'as totemperature may be nicely controlled, and sufficient air admitted to meet temperature -conditions under which the mill may be working. I

Such variations from the construction shown and described as are obvious mechanical expedients for the elements adopted by me, are to be regarded as Within my invention, and I do vnot limit myself,'-therefore,

except as limited by the terms of the ap-- pended claims.

Iclaim:- 1. In a mill of the class described, the combination of a roll-section, a reel-section, a conveyer delivering from said roll-section to said reel-section, and means for delivering air to the stock in transit from the rollsection to the reel-section.

2. In a mill of the class described, the combination of a roll-section, a reel-section,

a conveyer delivering from said roll-section to said reel-section, and means for delivering air to said conveyer between'said rolland reel-sections.

3. In a mill of the class described, the

combination of a roll-section, a reel-section,-

a conveyer delivering from said roll-section to said reel-section, means for deliveringan to said conveyer between said rolland reelsections, and means for regulating air de livery.

4. In a mill of the class described, the combination of a roll-section, a reel-section,

a conveyer delivering from said roll-section conveyer having an air-inlet.

5. In a mill'of the class, described, the

combination of a roll-section, a reel-section, a conveyer delivering. from said roll-section to said reel-section, a housing for said conveyer having an air inlet, and means for I'flgulating admission of air through-said i et.

6. In a mill' of the class described, a rollsection for reduction of the grain, a reelfor said section independent of said roll-section for bolting of the stock, a conveyer to receive the stock from said'roll-section and deliver it to said reel-section, and a housing 'for said conveyer connecting said rolland reelsections, said housing aving an air inlet in its upper part, and a gate for said inlet to regulate admission of. air;

said second casing, a conveyer housing con- I necting said casings, and a conveyer delivering from said first casing to said second cas-- ing, said housing having an airinlet for admitting air to said housing and bolting section.

8( In a mill of the class combinationof a breaking section having a casing, breaking and reducing rolls in said bolting section having a casing casing, a independent of said first casing, bolting instrumentalities in said second casing, a housing connecting said casings and having an air inlet opening for admitting air to said described, the

housing and bolting section, and a conveyer in said housing delivering from said first "casing to said second casing, said conveyer being of a type capable I of pumping air through said air opening into said bolting section.

9. In a mill of the class described, the combination of a breaking section having a closed casing, breaking and reducing rollers in said casing, a bolting section having a closed casing independent of said first casing, bolting. instrumentalities in said second casing, a conveyer housing connecting said casings and having an air inlet opening at its top and between said sections, and a screW-conveyer delivering from said first casing to said second casing.

In testimony whereof I have hereunto set my hand.

LUCIUS FREEMAN LITTLE 

